FC6启动X失败的问题

lurz

FC6系统，启动进入X时经常失败，表现为屏幕中央有一白方块，鼠标键盘均失效，只能按机箱reset键重启，在/var/log/Xorg.0.log.old中找到如下出错的信息：

Error in I830WaitLpRing(), now is 544797452, start is 544795451
pgetbl_ctl: 0x1ffe0001 pgetbl_err: 0x49
ipeir: 0 iphdr: 54b00007
LP ring tail: 188 head: 144 len: 1f001 start 0
eir: 0 esr: 10 emr: ff7b
instdone: ffc1 instpm: 0
memmode: 0 instps: 24
hwstam: fffe ier: 82 imr: 53c iir: 0
space: 130996 wanted 131064
(II) I810(0): [drm] removed 1 reserved context for kernel
(II) I810(0): [drm] unmapping 8192 bytes of SAREA 0xe0441000 at 0xb7f04000

Fatal server error:
lockup

(II) AIGLX: Suspending AIGLX clients for VT switch
Error in I830WaitLpRing(), now is 544799471, start is 544797470
pgetbl_ctl: 0x1ffe0001 pgetbl_err: 0x49
ipeir: 0 iphdr: 54b00007
LP ring tail: 190 head: 144 len: 1f001 start 0
eir: 0 esr: 10 emr: ff7b
instdone: ffc1 instpm: 0
memmode: 0 instps: 24
hwstam: fffe ier: 82 imr: 53c iir: 0
space: 130988 wanted 131064

FatalError re-entered, aborting
lockup

想问题一下有没有办法解决？
谢谢！